All Mods Mod
Use this script to globally controll the state of modifiers in your scene. You can set to whatever viewport / render mode that you want. This is usefull for keeping your scenes light by turning off all of the turbosmooths or subdivisions for example.
Unlike the name would suggest, this does not have every modifier in it, however the file is un-encrypted and it should be painfully clear how to edit the code to modify whatever modifier you wish.